Having said that I don't speak English well, let me tell you a ROM that I found on the Russian forum 4PDA (but it also speaks on the MIUI.ES forum) .ROM's name is Sudamod based I think, on Cyanogen . is much richer of features already integrated into the ROM and I haven't encountered the problems found on AOSP (the memory is not accessed), CM12 (alarm that crashes the phone) and Mokee (audio on the call and in the speakerphone, it's too low). I haved installed a few days, it works perfectly....
[rom] Sudamod 5.1
[rom] Sudamod 5.1